47063f00e4
operators to simplify testing for directory and attributes, throughout.
* path.h (path_conv::exists): New method.
(path_conv::has_attribute): Ditto.
(path_conv::isdir): Ditto.
(path_conv::DWORD &): New operator.
(path_conv::int &): Ditto.
* dir.cc (rmdir): Eliminate a goto.
* dtable.cc (dtable::build_fhandler): Accept opt and suffix info for
path_conv.check. Return fh == NULL on path_conv error. Pass unit to set_name
as appropriate.
(dtable::reset_unix_path_name): New method.
* dtable.h (dtable): Declare new method. Reflect arg changes to
build_fhandler.
* fhandler.cc (fhandler_disk_dummy_name): Eliminate.
(fhandler_base::set_name): Expect paths to be NULL. Build unix_path_name from
win32_path_name when it is a device.
(fhandler_base::reset_unix_path_name): New method.
(fhandler_base::raw_read): Report EISDIR when ERROR_INVALID_FUNCTION or
ERROR_INVALID_PARAMETER and reading a directory.
(fhandler_disk_file::fstat): Don't call stat_dev since we should now never be
calling fhandler_disk_file methods with devices.
(fhandler_base::fhandler_base): Clear {unix,win32}_path_name.
(fhandler_base::~fhandler_base): Always free {unix,win32}_path_name.
(fhandler_disk_file::fhandler_disk_file): Remove set_no_free_names kludge.
(fhandler_disk_file::open): Ditto.
* fhandler.h (fhandler_base::no_free_names): Eliminate.
(fhandler_base::set_no_free_names): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Don't set
unix_path_name here.
* path.cc (fchdir): Lock fd table throughout. Use new
dtable::reset_unix_path_name method to reset path.
* syscalls.cc (stat_worker): Reorganize to always call fstat method. Pass
path_conv method to fhandler_*::open.
(chroot): Elminate a goto.
99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/* sysconf.cc
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Copyright 1996, 1997, 1998, 1999, 2000, 2001 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <unistd.h>
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#include <errno.h>
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#include <time.h>
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#include <limits.h>
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#include <ntdef.h>
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#include "security.h"
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#include "fhandler.h"
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#include "path.h"
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#include "dtable.h"
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#include "cygheap.h"
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#include "cygerrno.h"
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#include "ntdll.h"
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/* sysconf: POSIX 4.8.1.1 */
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/* Allows a portable app to determine quantities of resources or
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presence of an option at execution time. */
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long int
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sysconf (int in)
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{
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switch (in)
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{
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case _SC_ARG_MAX:
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/* FIXME: what's the right value? _POSIX_ARG_MAX is only 4K */
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return 1048576;
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case _SC_OPEN_MAX:
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return getdtablesize ();
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case _SC_PAGESIZE:
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return getpagesize ();
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case _SC_CLK_TCK:
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return CLOCKS_PER_SEC;
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case _SC_JOB_CONTROL:
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return _POSIX_JOB_CONTROL;
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case _SC_CHILD_MAX:
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return CHILD_MAX;
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case _SC_NGROUPS_MAX:
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return NGROUPS_MAX;
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case _SC_SAVED_IDS:
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return _POSIX_SAVED_IDS;
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case _SC_VERSION:
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return _POSIX_VERSION;
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#if 0 /* FIXME -- unimplemented */
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case _SC_TZNAME_MAX:
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return _POSIX_TZNAME_MAX;
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case _SC_STREAM_MAX:
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return _POSIX_STREAM_MAX;
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#endif
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case _SC_NPROCESSORS_CONF:
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case _SC_NPROCESSORS_ONLN:
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if (!wincap.supports_smp ())
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return 1;
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/*FALLTHRU*/
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case _SC_PHYS_PAGES:
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case _SC_AVPHYS_PAGES:
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if (!wincap.supports_smp ())
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{
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NTSTATUS ret;
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SYSTEM_BASIC_INFORMATION sbi;
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if ((ret = NtQuerySystemInformation (SystemBasicInformation,
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(PVOID) &sbi,
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sizeof sbi, NULL))
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!= STATUS_SUCCESS)
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{
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__seterrno_from_win_error (RtlNtStatusToDosError (ret));
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debug_printf("NtQuerySystemInformation: ret = %d, "
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"Dos(ret) = %d",
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ret, RtlNtStatusToDosError (ret));
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return -1;
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}
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switch (in)
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{
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case _SC_NPROCESSORS_CONF:
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return sbi.NumberProcessors;
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case _SC_NPROCESSORS_ONLN:
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return sbi.ActiveProcessors;
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case _SC_PHYS_PAGES:
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return sbi.NumberOfPhysicalPages;
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case _SC_AVPHYS_PAGES:
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return sbi.HighestPhysicalPage - sbi.LowestPhysicalPage + 1;
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}
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}
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break;
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}
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/* Invalid input or unimplemented sysconf name */
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set_errno (EINVAL);
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return -1;
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}
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